Riveting-machine.



N0. 638,8l5. Patented Dec. l2, I899. J. H'. SHEPARD.

RIVETING MACHINE.

(Application filed Mar. 14, 1899.) ("0 Model) 2 Sheets-Sheet I rm: mums PETERS ca. mom-umu" WASHINGTON, n. c.

No. 638,8l5. Patented nee. l2, I899. J. H. SHEPARD.

RIVETING MACHINE.

(Application filed Mar. 14, 1899.) (No Model.) 2 Sheets-Sheet 2.

Wilmuam Janeen .fi.

NITED STATES JAMES H. SHEPARD,

on DALLAS, TEXAS.

RlVETlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 638,815, dated December 12, 1899.

Application filed March 14) 1899.

To all whom it may concern:

Be it known that I, JAMES H. SHEPARD, a citizen of the United States, residing at Dallas, in the county of Dallas and State ofTexas, have invented certain new and useful Improvements in RivetingMachines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates more particularly to that class of riveting-machines which are adapted for-employment in connection with tubular rivets.

The Objects of this invention are to simplify and improve the general construction of such machines and to provide a novel and efficient means for effecting automatically the feeding of the rivets into position to be engaged by the plunger.

Other novel features of construction are set forth in the following description of the various details of the machine, which description is to be read in connection with the accompanying drawings.

In the drawings, Figure 1 is a side elevation of a riveting-machine embodying my invention. Fig. 2 is a front elevation. -Fig. 3 is a vertical longitudinal sectional view. Fig. 4 is a transverse sectional view on line 4 4 of Fig. 1.

Referring to the said drawings by letter, A denotes the body of the machine, mounted on a suitable base B and provided at its forward end with a head 0, in the bifurcated upper end of which is pivotally mounted the plunger operating lever D. The plunger E is verti cally movable in the head 0, being guided by lugs e e, which extend from its upper end between the bifurcations, the lug c projecting outwardly beyond the head, for a purpose presently to be explained. The plunger E is depressed against the action of a spring e coiled around it and interposed between the lugs e e and a shoulder e by a cam d, provided on the lever adjacent to its pivot. The downward movement of the lever, and consequently the depression of the plunger, is limited by a stop cl on the lever, which will en- Serial No. '709,001. (No model.)

gage the side of the head when the lever reaches its lowermost position.

In one side of the head,toward its lower end, is a slot 0, through which the rivets are fed to the plunger. The rivets are stacked in a chutef, the open lower end of which is opposite to the slot, and means are provided for autonormally moved inwardly by the action of a spring coiled around a pin h and contacting with a lug h on the follower-plate and through which the pin passes. The follower-plate is provided at its forward end with an extension h which normally covers the slot in the plate G, and thereby affords a temporary support for the rivets. At the extremity of the extension k is a downwardly-extending finger h curved slightly in cross-section. At the outer side of one of the bifurcations of the head is pivoted a lever I, the lower end of which is connected by a rod j with an apertured lug h carried by the follower-plate. Intermediate of its ends the lever I is offset, providing an inclined or cam edge 2', which is in the path of the lug e of the plunger. In practice the lever D normally occupies the position shown in Fig. 1, the plunger being at its highest po sition and the follower-plate being moved inwardly by the action of its spring. The slot in the plate G is thus covered by the extension 71 and the latter affords a support for the rivets. The lever D being new swung over its cam forces down the plunger, and the lug e on the latter engaging the lever I the follower-plate and its extension are moved rearwardly, thereby uncovering the slot 9 and permitting the lowermost rivet to occupy it. The lever D is then swung back to its normal position, which elevates the plunger and moves the follower-plate inwardly by the acrivet may be fed into position by moving the follower-plate independently of the lever D, and to enable this to be readily done I provide on the lever I a handle 46, as shown.

From the slot the rivet falls between two jaws 70 k, which grasp it in position with the head uppermost until the plunger descends to separate them and force out the rivet into the material to be riveted. The jaws 7c are each pivotally mounted on apin 7c, and above this pivot there is an arm 70 between which and the head is confined a spring 70 whereby said jaws are normally held in contact, it being understood that the opening formed by the recesses in the inner face of the jaws is of sufficient size to admit the body of a rivet when the jaws are closed.

The anvil L is of cylindrical form and is provided in its upper face with a conical projection Z and around said projection with an annular recess 1, whereby the lower end of the.

- rivet is upset. This anvil is made to be adjustable in height according to the thickness of material to be riveted and to this end is mounted to be vertically movable in a block m and is threaded for engagement with an adjusting-nut n, confined in a recess m in the block. The lower end of the anvil is squared and is guided in asquare opening in the base. Obviously by turning the nut n the anvil may be raised or lowered with reference to the thickness of material or to the length of rivet.

In the operation of my invention after a hole has been made in the material the latter is placed on the anvil with its hole in line with the plunger, and the levers D or I, as the case may be, being operated a rivet is conveyed to the jaws. The lever D is then swung over, andthe rivet is forced into the hole of the material and by engagement with the anvil is upset atits lower end. In swinging the lever back to its normal position a second rivet is brought into position, and so on.

My improved machine having the abovedescribed provision for the automatic feeding of the rivets may be rapidly operated with the exercise of but little labor and skill. The construction of the machine being simple and involving but few parts, there is little liability to disorder, and, moreover, the machine may be thereby made at a low cost.

I claim as my invention- 1. In combination with the plunger of a riveting-machine and with a rivet-chute, of means for feeding rivets to the plunger consisting of a plate having a slot which receives the bodies of the rivets, a spring-controlled follower-plate slidable on the aforesaid plate and having an extension terminating in a finger projecting through the slot and to engage a rivet, and a lever having rod connection with the follower-plate and adapted to be manipulated by hand or actuated by a device on the plunger to move the plate rearwardly to engage a rivet, the feeding of the latter being accomplished through the action of its spring.

2. In a riveting-machine and in combination with a spring-sustained plunger, means for actuating it, and a rivet-chute, a fixed plate or shelf its inner end terminating in a recess at the line of the inner wall of the plunger-guideway and provided with a slot within which the rivets are suspended, terminating in said guideway, a follower or pusher engaging the slot of the fixed plate or shelf, a spring for retracting the follower or pusher, and means for limiting its forward movement, whereby the rivets are fed directly into the guideway of the plunger.

3. In a riveting-machine and in combina-' tion with the base-head having a vertical guideway terminating in a pair of rivet-retaining jaws having a fixed relation to said base-head, a plunger operating in said guideway above the jaws, a rivet-chute, a fixed plate or shelf terminating in a recess at the inner wall of the plunger-guideway above the jaws and provided with a slot terminatingin said guideway, a follower or pusher having a finger depending in said slot, a spring for re tracting said finger, and means for limiting the travel of said finger at the inner wall of the guideway.

4.-. In a machine for setting rivets, a seatin g for the anvil comprising a base-plate having'an aperture of angular cross-section, a cap on the base-plate providing a recess said cap having an aperture in line with the aperture of the base-plate, in combination with an anvil having a lower angular portion engaging the aperture in the base-plate but having vertical movement therein said anvil hav ing its upper end loosely passed through the aperture in the cap and provided with an intermediate threaded portion, and a shouldered nut engaging the threaded portion of the anvil and confined within the recess.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES H. SHEPARD.

Witnesses:

H. B. CocKE, R. L. MAUPIN. 

